<?php

function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {
    $ckey_length = 4;
    $key = md5(($key ? $key : ""));
    $keya = md5(substr($key, 0, 16));
    $keyb = md5(substr($key, 16, 16));
    $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length) : substr(md5(microtime()), -$ckey_length)) : '';
    $cryptkey = $keya . md5($keya . $keyc);
    $key_length = strlen($cryptkey);
    $string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0) . substr(md5($string . $keyb), 0, 16) . $string;
    $string_length = strlen($string);
    $result = '';
    $box = range(0, 255);
    $rndkey = array();
    for ($i = 0; $i <= 255; $i++) {
        $rndkey[$i] = ord($cryptkey[$i % $key_length]);
    }
    for ($j = $i = 0; $i < 256; $i++) {
        $j = ($j + $box[$i] + $rndkey[$i]) % 256;
        $tmp = $box[$i];
        $box[$i] = $box[$j];
        $box[$j] = $tmp;
    }
    for ($a = $j = $i = 0; $i < $string_length; $i++) {
        $a = ($a + 1) % 256;
        $j = ($j + $box[$a]) % 256;
        $tmp = $box[$a];
        $box[$a] = $box[$j];
        $box[$j] = $tmp;
        $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
    }
    if ($operation == 'DECODE') {
        if ((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26) . $keyb), 0, 16)) {
            return substr($result, 26);
        } else {
            return '';
        }
    } else {
        return $keyc . str_replace('=', '', base64_encode($result));
    }
}

$is_login = $_GET["is_login"];
$auth = $_GET["auth"];
$auth = str_replace(" ", "+", $auth);
$json = authcode($auth, "DECODE");
?>
<script>
    //设置cookie
    function setCookie(name, value, Days)
    {
        var exp = new Date();
        if (Days > 0) {
            exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000);
        } else {
            exp.setTime(-1);
        }
        document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString() + ";path=/";
    }
    var result = '<?php echo $json; ?>';
</script>
<?php if($is_login==1){ ?>
<script type='text/javascript' src='/js/jquery.js?001'></script>
<script>
$.each(JSON.parse(result), function (v, i) {
    setCookie(v, i, 365);
})
location.href="http://u.foodie.vc/main.html?from=app#!main-html";
</script>
<?php }else{ ?>
<script>
var json = JSON.parse(result);    
setCookie("facebook_logout",json.facebook_logout, 365);
setCookie("sync_login_info",result, 1);
location.href="http://u.foodie.vc/main.html?from=app#!bind-html";
</script>
<?php } ?>

